Chuck foe cutting bareel-heads



UNITED STATES PATENT OFFICE.

FRANKLIN FRUIT. OF JEFFERSON CITY, MISSOURI.

CHUCK FOR CUTTING BARREL-HEADS.

Specification of Letters Patent No. 10,228, dated November 15, 1853.

To @ZZ whom t may concern.'

Be it. known that I, FRANKLIN FRUIT, of Jefferson City, in the county ofCole and State of Missouri, have invented a new and useful Improvementin Machines for Cutting Barrel-Heads; and I do hereby declare that thefollowing is a full, clear, and exact description of the same, referencebeing had to the annexed drawings, making a part of this specification,in which- Figure l, is a plan or top view of the machine. Fig. 2, is aface view of the chuck.

Similar letters of reference indicate corr spending parts, in each ofthe two figures.

The nature of my invention consists in holding the material of which thebarrelhead is cut, by means of a chuck, having a series of centers,placed in circular form, and concentric with the periphery of the chuck.Each center is provided with a spiral spring, which enables the centers,individually, to give or yield, so that the different. pieces formingkthe barrel-head may vary in thickness, and still be firmly held by thechuck, as will be presently shown.

To enable others skilled in the art to make and use my invention, I willproceed to describe its construct-ion and operation.

A, represents a mandrel, or shaft, on one end of which a face-plate, B,is secured.

O, is a mandrel, or shaft, on one end of which a chuck, D, is secured,and which chuck will be hereafter fully described. The two mandrels, orshafts, A, O, are placed in line, and work or run in suitable bearings,supported by a frame, constructed in any suitable manner.

The stuff or material from which the barrel-heads are cut, is securedbetween the face-plate, B, and the centers of the chuck, D.

The chuck is formed or constructed of two circular disks, (a), connectedby studs, (c), of such a length as to allow a requisite space betweenthe disks. These studs are screwed into the front disk, (a), and theiropposite ends pass through the back disk, (b), and have nuts, (d), uponthem, which nuts are screwed firmly against the outer surface ofthe backdisk. The studs are placed all around the disks, and near their edges,forming a circle, concentric with the peripheries of the disks.

Between the studs, (c), are placed centers, (e), which pass through boththe front and back disks. The centers have collars, (f), upon them; andbetween the collars and the inner side of the back-plate, and upon eachcenter, there is placed a spiral spring, These springs, of course tendto throw the points of the centers firmly against the stuff or material,represented by, E.

Barrel-heads are formed of several pieces; and these pieces often varyin thickness. Now, by placing the several pieces against the face-plate,B, the centers, (e), will press each piece firmly against theface-plate, no matter whether it is thick or thin; for, if thick, thesprings will allow the centers, against which the piece is in contact,to yield or give sufficiently to allow the perfect adjustment of thepiece, between the faceplate and centers; the centers holding orpressing it firmly against the face-plate. If the piece is thin, thesprings will force the centers forward and against it, and withsufficient pressure to keep it firmly to the face-plate.

In Fig. 2, the red lines indicate a barrelhead, and the several piecesof which it is formed.

It will be seen, by the above arrangement, that each piece of abarrel-head may dier in thickness from the others; and, as each centeris provided with a spring, and works independently of the others, eachpiece may be properly secured between the face-plate and chuck.

The mandrels, or shafts, A, C, are provided each with a screw, F, attheir outer ends, by operating which, the face-plate and chuck may bebrought nearer together, or placed farther apart, as desired.

G, G, are two slides, which contain cutters, H, I, for cutting thebevels on the periphery of the head; and also, a cutter, J, for cuttingthe head in circular form, or of the proper circumference.

The slides are moved, longitudinally, by means of levers, K, K, the topsof which are seen in Fig. l and they are moved, laterally, by means ofscrews, Il, L, Ii.

The slides and cutters, and also the manner of operating them, are wellknown and familiar devices, and require no further description.

I do not claim the slides, nor the cutters, nor any particular manner ofoperating them; but,

I-Iaving described my invention, what I claim as new, and desire tosecure by Letters Patent, is,

The chuck, D, constructed substantially independently of the'others, sothat the different pieces forming the barrel-head may Vary in thickness,and still be properly adjusted and secured between the face-plate A(indchuck, as set forth in the body of this specication.

FRANKLIN FRUIT.

Vitnesses:

E. B. COBDELL, W. H. CRAWFORD.

